p2 sites for 3.8 target platformhttps://www.eclipse.org/forums/index.php/mv/msg/441628/991119/#msg_991119
But I can't find all the p2 sites for 3.8! I only found http://download.eclipse.org/eclipse/updates/3.8, but not the base release site.

Here's how it worked for Indigo 3.7.2 in our CQuery/RMap (I've simplified it a bit):

]]>Matthew Webber2012-12-17T12:17:01-00:00Re: p2 sites for 3.8 target platformhttps://www.eclipse.org/forums/index.php/mv/msg/441628/991280/#msg_991280
The answer to your question is no. Indigo is equivalent to 3.7. Juno is
equivalent to both 3.8.x and 4.2.x The difference between 3.8.x and
4.2.x is in the new UI. They share everything else.